Pipe Flow Gas Pressure Drop is a utility application designed for iPhone users that calculates pressure losses in gas flow systems. Utilizing compressible isothermal equations, the app provides results for friction loss and fitting loss through various established equations, including AGA and Weymouth. It automatically adjusts for changes in gas density using the Ideal Gas Law, and users can define atmospheric pressure and standard volume conditions as necessary.

The app features an intuitive user interface that facilitates easy input of data, including elevation changes and the selection of valves and fittings. Comprehensive results include essential parameters such as Reynolds number, friction factor, and fluid velocities, all displayed in an organized manner. Users can work with an extensive database of gases, pipe materials, and fittings, while also having the option to create custom entries. With capabilities for generating professional reports and verifying calculations against published data, this app serves as a reliable tool for engineers both in the office and on-site.